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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Nelson, Bill [D-FL]* 03/20/2007
Sen. Dole, Elizabeth [R-NC]* 03/20/2007
Sen. Landrieu, Mary L. [D-LA]* 03/20/2007
Sen. Cochran, Thad [R-MS] 03/21/2007
Sen. Vitter, David [R-LA] 05/06/2008